ESXi is telling fibs to backup software

Redditor “tottenham12712” has pieced together a scary scenario for VMware users: ESXi might be feeding dud data to backup software. VMware knows it has a problem. Indeed, it has explained in this knowledge base article that when vAdmins expand a vmdk file past 128GB, and Change Block Tracking (CBT) is enabled, the …

[Scott Mckenzie]

Veeam Fix

Veeam have recommended disabling and re-enabling CBT - which can be done with this powershell script - http://www.itwalkthru.com/2012/03/disabling-or-enabling-vmware-change.html

The next backup will take quite a bit longer though!

[ZenaB]

Where's SureBackup??

I thought Veeam SureBackup was designed to check the backup can be restored by starting it up?

[Anonymous Coward]

Re: Where's SureBackup??

That is correct. And it detects this issue as Windows will fail to boot after incremental backup with messed up CBT data.